Replacing preview track

I regularly buy tracks from Audio Jungle but I’ll have to stop.
On most occasions I cannot link the bought music file with the preview I have cut to in my FCP project.
This, frustratingly, adds work to the end of the edit as you have to manually recreate all edits, levels and mixes. There must be a simple way of ensuring the bought files are linkable.

Hi Martin, is this because the audio you receive in your pack is presented as separate versions split unlike the preview which can sometimes include up to five versions of the song back to back? Or is this for some other reason I’m missing?
Best, Archie